Recovering volatile liquids.



C. HARRISON, W. BATE .6L W. G. PERKS.

RBGOVERING VOLATILE LIQUIDS.

APPLICATION YILED sBPT.1a, 1907.

Patented Apr. 9, 1912.

' LQQG Emma 1 fhe pro-'Jess of i im die flle LJECVERENG VLATILE L'JQUDS.

implication egieniber 13, 3,90*?.

neem v l'ecovering Volatile Liquids? Y 'ne rollo'wing is s speoica-iion.

s inve-nion releies "zo improved 'for ihe ,recovery i ey have been use-l es e solveni, for misiones es corfliibe ii minor: yus suitable for use in oerifying om; if process illustreizecl diagrammes l iii elle accompanying flrewin. in il earl-abus the absorbers consist i u recente/les through which 'the s ooiileiiiing yolslilejvapor ore ,m ioroel snol which ere supplied i i e suitable absorbent liquil; ln the cese ooe'one vapors We find thai the most suiisble liqui for the purpose is e solution. eliloi-id of calcium of about L00 Twocldeli "of 1.20 sp. This liquidi is piaceri iii e 'L e ani from which it is eri'snge lo ,W .into reeeptscle farthest removed ein the inlet The receplsoles unich are preferably the construction own is llloliisjboifsie's are arranged stepi so that 'the leh'loricl of calcium solution iiows from tho iiorlliesbor 'Lniiieriiost bottle progressively (lo ord' tor. sid the gos iiiiet and "the ges merels in iion u'vpisi ihrougli the series of boiiles. ln this manner ille bo'iile containing the riehes'u soluion of acetone iii ehloricl of celoiuin soluiion is ihsi nearest the ges inlet snel from it the ges posses .successively into and. less charged receptacles until et the iin-(il boizle lehe last feroces of Volatile vapor @eine iii coiilsoi 7ili fresh iiquid. fis in absorption the Volume of the ooiiiinuousiy diminished the capacity oi ille bei slioulol diminish, in like proportion. 'ne eirculsion is maintained by ineens of; o smell oir pu rip or in any oliier oorveoifut'manner enel by ineens olf .e balance is insineinefl il the' pressure in o i?? biere is no el loool;

oi? volse-lie liquidsy 'one or alcohol from substances Sosial lo. 332,78.

one.

obere set 'lorth is to provide s liqui solution oi ohio icl of calcium rich in acetone or alcohol. From this soluion "ehe voletile liquifi is recovered by distillation et e viemperoture above 10G degrees centigredesnd the soluiion of calcium ehloiicl ine-y after cooling be useci over again.

lll e (lo not limit ourselves to the use of ohio id of calcium solution lfor rlissolving iE-lie volatile vener., Thense of rho inorganic sal; being merely 'for jshe purpose of iacili feeling "che separat-ion* of the yoletile liquid from alie weiter during the dis'illeiion, Wel muy equally well absorb the Volatile liquid in Writer and subsequently edd the inorgenio sale lio the solution before' distillation. ilie practical sclvsniege oi using the ebove' specified solution of chloricl of calcium for this purpose lies in the cheepness oif lie ms,- terisl and the feet that the solution is unimpoired by the process of recovery of the acetone or alcohol and when brought to the proper strengh een be forthwith used over again for the recovery of fresh quantities oi acetone or alcohol.'

Referring in oletsil to the drawing; the wipers from the drying stoves arrive by Jche pipe 1 and poss through e valve 2 into the lowesto elle seturstors, These vessels marked respectively 3a 3X are connected iu series enci ormed preferably of progressively climinishing capacity as already explained. The vapors escaping from the last soturstor 3X are drawn through the pipe 9 inco the tank l0. This ianlr is provided with a gege glass 11, discharge oooh; 12 and manonieier 13; in it any liquid passing over will collect snol can be periodically removed. The remaining Vapor and gases are drown 'out of the tank 10 ilirough the pipe 111' by the pump or aspirator 15 and pass up into a. second set of sauretoi's if necessary .1('31-16I Where they are brought into cootoo: with absorbent, liquid, flowing downward into the tenir 7. From the uppermost setiuator the gases pass through the pipe 17- iriio the collecting chamber 1S, then through drying chambers 'i9 incl back lo glie stoves 'through the pipe @il i ihe absorbent liquid` is delivered from `i erorege cisern (not shown\ through 4lhe into ichs cisiern 5 from which itvfiows usili o loro `-he uppermost semiuralzor 5X zuione nem soil so on7 fiescenuing into file ooilening tenir from which vessel it is run off through the pipe `8 to the column still or other device for separating the volatile from the absorbent liquid.

What We claim is: l. A process for the recovery of small percentages of vapor of volatile liquid diffused through a large bulk of air, Which comprises causing the air current to passupward through a series of separate and independent saturators, chemically indifferentliquiddescends from one to another in a continuous undisturbed ilovv,l whereby the Volatile vapor is diffused through the absorbent liquid, and finally recovering the dissolved volatile liquid therefrom by distillation.

2. A process for the recovery of acetone vapor from moist cordite Which consists in drying it in a current of air, passing the air in an ascending current through saturathrough which av tors through which a solution of chlorid 'of calcium Hows downward, distilling ed the absorbed acetone from the chlorid of calcium solution, and returning the said solution after distillation to the uppermost saturator for use over again.'

In witness whereof we havel signed our names to this specification in the presence of two subscribing Witnesses.

CHARLES HARRISON.

WILLIAM BATE. WALTER G. PERKS. 1Witnesses to the signatures of Charles Harrison and VVillialn Bate: v

HOWARD Fox, VVILLIAM'H. DANIELL. Witnesses to the signature of Walter George Perks: 1

LEONARD E. HAYNES, FREDK.l L. RAND.4 

